Not sure in today's date (March 2013) about it...but Yes, I asked the same query from oracle by mail in 2012 and they said Yes...you can appear for the Part 2nd & 3rd. I was in same boat and was considering to clear my last 2 parts...later I dropped the idea for time being due to huge increased fee & my own time schedule to get final certificate from oracle......will plan sometimes if got proper time from job for preparation....

go and ask again from oracle...hopefully you don't need to appear for part 1st as it was 5.0 version....few peoples are going for SCEA/OCMJEA certificate now a days after fee increased by Oracle....so they will allow old candidates I hope...